SAN ANTONIO -

Police say a young boy is in the hospital after a crash caused by an argument between his mother and her boyfriend.

It happened around 1 a.m. Saturday in the 1100 block of W. Southcross.

According to officers, the couple argued as the mother drove a pick-up with the boy in the back seat.

They say the boyfriend grabbed the wheel, causing the woman to lose control and hit a curb in front of a home.

After the crash the boyfriend ran.

Police say the woman's son was secure in the backseat, but suffered a head injury.

EMS transported him to University Hospital in stable condition.